Bunsen burner shield guard and reflector



Nov. 24, 1964 E. J. CATANIA 3,153,147

BUNSEN BURNER SHIELD GUARD AND REFLECTOR Filed April 24, 1963 i 2Sheets-Sheet 1 INVENTOK IF 3 EDWARD J. CATANIA E J. CATANIA BUNSENBURNER SHIELD GUARD AND REFLECTOR Nov. 24, 1964 2 Sheets-Sheet 2 FiledApril 24, 1963 INVENTOR. EDWARD J. CATANIA VZVM ZAZUZNEYJ United StatesPatent 3,158,147 BUNSEN BURNER SHIELD GUARD AND REFLECTOR Edward .I.Catania, 480 Henry St., Brooklyn 31, N.Y. Filed Apr. 24, 1963, Ser. No.275,279 2 Claims. (Cl. 126-36) This invention relates to an attachmentfor a Bunsen burner, and more particularly concerns a reflector andshield for use with such a burner.

According to the invention there is provided a cylindrically curvedplate having a forwardly extending base which can be attached to the tipof a Bunsen burner. The curved plate serves to concentrate the heat ofthe flame upon an article being worked in the flame. The invention isparticularly useful in mechanical dental work upon dentures where aBunsen burner flame is employed. The invention is also useful in otherapplications where a shield and reflector may be employed in associationwith a Bunsen burner. In another form or" the invention, the curvedplate is provided with a pair of slidable wings which can be extended toadjust the width of the shield.

It is therefore one object of the invention to provide a shield andreflector for use as an attachment to a Bunsen burner.

Another object is to provide a shield including a concave, upright plateand a horizontal, flat base sector plate, the upright plate serving as areflector and shield for a flame of a Bunsen burner, while the baseplate serves to mount the shield to the Bunsen burner. I

For further comprehension of the invention, and of the objects andadvantages thereof, reference will be had to the following descriptionand accompanying drawings, and to the appended claims in which thevarious novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

FIG. 1 is a front elevational View of a shield embodying the invention,shown in association with a Bunsen burner.

FIG. 2 is a side elevational view of the shield alone.

FIG. 3 is a top plan view of the shield alone.

FIG. 4 is a perspective view of another shield embodying the invention,with lateral wings in a retracted position.

FIG. 5 is a top plan view on an enlarged scale of the shield of FIG. 4,on a reduced scale.

FIG. 6 is a front elevational view of the shield of FIG. 4 on anenlarged scale, with lateral wings extended.

FIG. 7 is a top plan view of the shield with wings extended.

FIG. 8 is a sectional view on a further enlarged scale taken on line 88of FIG. 6.

Referring to FIGS. 1-3, there is shown a shield 10 embodying theinvention. This shield includes an upright, axially vertical metal plate12 which is an oblique section of a cylinder. The plate is widest at itsbase and extends arcuately about 135. The edges 14 14 of the plateextend vertically up to a midpoint A and then are inclined upwardly andrearwardly in an arc C. Flanges 16 16 extend horizontally from thebottom of plate 12 and are welded to a forwardly extending circularsector plate 20. The sector plate has edges 22 22 extending about 135 toeach other from apex 2 1 of the plate 23. Curved rear edge portions 23are turned up against flanges 16 16. A hole 24 is formed in plate nearapex 21. The plate 20 fits on the threaded tip 27 of a post 30 of aBunsen burner 25. The tip extends through hole 24 and an internallythreaded burner tip 29 holds the plate 20 fixed between annular shoulder31 on burner post 39 and the burner tip 29.

The concave side of plate 12 faces forwardly toward 3,158,147 PatentedNov. 24, 1964 the burner flame F and serves to concentrate heat upon anarticle which may be worked or heated in the flame. The long, wideshield prevents sparks and particles from scattering from the workingarea of the flame. The shield may be highly polished and renders theflame more visible to a mechanic or operator. The shield may be finishedin black or any desired color. The base plate 20 may serve as a platformto support tools and other articles being used by the mechanic oroperator.

FIGS. 4-8 show another Bunsen burner shield 10 which may be attached toa Bunsen burner. Shield 10 is similar to shield 10 and similar parts areidentically numbered. Shield 10 has a pair of wings or wing plates 32*,32 which serve to extend from the shield plate 12 laterally at oppositeedges. Each of the wing plates is cylindrically curved and its insidecurvature conforms with the convex outside curvature of plate 12. Eachof the wing plates has a straight edge portion 14' and a curved upperportion B. Two horizontal slots 35', 35" are formed in each of the wingplates. These slots are spaced apart vertically of the wing plates.Rivets 36 anchored in holes 37 in the plate 12 slidably engage edges ofslots 35', 35" so that the wing plates can be laterally of plate 12while remaining in contact therewith to serve as lateral extensions asclearly shown in FIGS. 6 and 7. When the plates 32*, 32* are retractedto the position shown in FIGS. 4 and 5, edge portions 14' extendlaterally of edges 14 14 of the plate 12. These edge portions can begrasped for selectively moving and adjusting either or both wing plateswith respect to the shield plate 12.

The shield 10 mounts on a Bunsen burner by engagement of hole 24 underthe tip 29 of a Bunsen burner in the same way as indicated in FIG. 1.Both shields 10* and 10 provide useful attachments and accessories for aBunsen burner. They make working with a Bunsen burner safer and quicker.

The parts of the shield can be stamped or cut out of pliable sheet metalat low cost by conventional metal working machinery. The shield is easyto mount on and remove from a Bunsen burner for replacement with othersif desired.

While I have illustrated and described the preferred embodiments of myinvention, it is to be understood that I do not limit myself to theprecise constructions herein disclosed and that various changes andmodifications may be made within the scope of the invention as definedin the appended claims.

Having thus described my invention, what I claim as new, and desire tosecure by United States Letters Patent is:

1. A reflector attachment for a Bunsen burner, said attachmentcomprising a cylindrically curved plate formed as an oblique section ofa cylinder with substantially straight lateral edges and with holestherein, a circularly curved bottom edge and an arcuate upper edge, abase plate extending forwardly from the bottom of the concave side ofsaid curved plate, said base plate being formed as a sector of a circlewith a forwardly extending apex and edges angularly disposed to eachother, said base plate having a curved rear edge registering with thecurved bottom edge of the curved plate, said base plate having a holenear said apex for engaging on a tip of the Bunsen burn-er post, a pairof cylindrically curved wing plates slidably abutted to the rear convexside of the curved plate and having spaced slots and rivets anchored inthe holes in the curved plate and engaged in the spaced slots forslidably holding the wing plates as lateral extensions of the curvedplate in continuation of the cylin drical curvature thereof, whereby thewing plates are selectively extensible with respect to the curved platefor adjusting the Width of the reflector attachment, said curved plate,base plate and wing plates having highly polished surfaces to reflectand concentrate heat of the flame at a tip of the Bunsen burner.

2. A reflector attachment for a Bunsen burner, said attachmentcomprising a cylindrically curved plate formed as an oblique section ofa cylinder with substantially straight lateral edges and with holestherein, a circularly curved bottom edge and an arcuate upper edge, abase plate extending forwardly from the bottom of the concave side ofsaid curved plate, said base plate hein g formed as a sector of a circlewith a forwardly extending apex and edges angularly disposed to eachother, said base plate having a curved rear edge registering with thecurved bottom edge of the curved plate, said base plate having a holenear said apex for engaging on a tip of the Bunsen burner post, a pairof cylindrically curved wing plates slidably abutted to the rear convexside of the curved plate and having spaced slots and rivets anchored inthe holes in the curved plate and engaged in the spaced slots forslidably holding the wing plates as lateral extensions of the curvedplate in continuation of the cylindrical curvature thereof, whereby thewing plates are selectively extensible with respect to the curved platefor adjusting the width of the reflector attachment, said curved plate,base plate and Wing plates having highly polished surfaces to reflectand concentrate heat of the fiarne at the tip of the Bunsen burner, saidcurved plate having forwardly extending flanges secured to said curvedrear edge of the base plate to reinforce attachment of the base plate tothe curved plate.

References Cited in the file of this patent UNITED STATES PATENTS734,432 Rue July 21, 1903 1,893,409 Grant Jan. 3, 1933 1,933,338Plishker Oct. 31, 1933 2,165,900 McGuire July 11, 1939 2,682,605Asherman June 29, 1954 2,813,196 Dempsey Nov. 12, 1957 FOREIGN PATENTS549,332 Germany Apr. 26, 1932

1. A REFLECTOR ATTACHMENT FOR A BUNSEN BURNER, SAID ATTACHMENT COMPRISING A CYLINDRICALLY CURVED PLATE FORMED AS AN OBLIQUE SECTION OF A CYLINDER WITH SUBSTANTIALLY STRAIGHT LATERAL EDGES AND WITH HOLES THEREIN, A CIRCULARLY CURVED BOTTOM EDGE AND AN ARCUATE UPPER EDGE, A BASE PLATE EXTENDING FORWARDLY FROM THE BOTTOM OF THE CONCAVE SIDE OF SAID CURVED PLATE, SAID BASE PLATE BEING FORMED AS A SECTOR OF A CIRCLE WITH A FORWARDLY EXTENDING APEX AND EDGES ANGULARLY DISPOSED TO EACH OTHER, SAID BASE PLATE HAVING A CURVED REAR EDGE REGISTERING WITH THE CURVED BOTTOM EDGE OF THE CURVED PLATE, SAID BASE PLATE HAVING A HOLE NEAR SAID APEX FOR ENGAGING ON A TIP OF THE BUNSEN BURNER POST, A PAIR OF CYLINDRICALLY CURVED WING PLATES SLIDABLY ABUTTED TO THE REAR CONVEX SIDE OF THE CURVED PLATE AND HAVING SPACED SLOTS AND RIVETS ANCHORED IN THE HOLES IN THE CURVED PLATE AND ENGAGED IN THE SPACED SLOTS FOR SLIDABLY HOLDING THE WING PLATES AS LATERAL EXTENSIONS OF THE CURVED PLATE IN CONTINUATION OF THE CYLINDRICAL CURVATURE THEREOF, WHEREBY THE WING PLATES ARE SELECTIVELY EXTENSIBLE WITH RESPECT TO THE CURVED PLATE FOR ADJUSTING THE WIDTH OF THE REFLECTOR ATTACHMENT, SAID CURVED PLATE, BASE PLATE AND WING PLATES HAVING HIGHLY POLISHED SURFACES TO REFLECT AND CONCENTRATE HEAT OF THE FLAME AT A TIP OF THE BUNSEN BURNER. 